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| ==Crystal Structure of GACKIX L664C Tethered to 1-10== | | ==Crystal Structure of GACKIX L664C Tethered to 1-10== |
- | <StructureSection load='4i9o' size='340' side='right' caption='[[4i9o]], [[Resolution|resolution]] 2.00Å' scene=''> | + | <StructureSection load='4i9o' size='340' side='right'caption='[[4i9o]], [[Resolution|resolution]] 2.00Å' scene=''> |
| == Structural highlights == | | == Structural highlights == |
- | <table><tr><td colspan='2'>[[4i9o]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4I9O OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4I9O FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4i9o]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4I9O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4I9O FirstGlance]. <br> |
- | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=KI1:1-{4-[4-CHLORO-3-(TRIFLUOROMETHYL)PHENYL]-4-HYDROXYPIPERIDIN-1-YL}-3-SULFANYLPROPAN-1-ONE'>KI1</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2Å</td></tr> |
- | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=KI1:1-{4-[4-CHLORO-3-(TRIFLUOROMETHYL)PHENYL]-4-HYDROXYPIPERIDIN-1-YL}-3-SULFANYLPROPAN-1-ONE'>KI1</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> |
- | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Crebbp, Cbp ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</td></tr>
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4i9o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4i9o OCA], [https://pdbe.org/4i9o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4i9o RCSB], [https://www.ebi.ac.uk/pdbsum/4i9o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4i9o ProSAT]</span></td></tr> |
- | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Histone_acetyltransferase Histone acetyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.1.48 2.3.1.48] </span></td></tr>
| + | |
- | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4i9o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4i9o OCA], [http://pdbe.org/4i9o PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4i9o RCSB], [http://www.ebi.ac.uk/pdbsum/4i9o PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4i9o ProSAT]</span></td></tr> | + | |
| </table> | | </table> |
| == Function == | | == Function == |
- | [[http://www.uniprot.org/uniprot/CBP_MOUSE CBP_MOUSE]] Acetylates histones, giving a specific tag for transcriptional activation. Also acetylates non-histone proteins, like NCOA3 and FOXO1. Binds specifically to phosphorylated CREB and enhances its transcriptional activity toward cAMP-responsive genes. Acts as a coactivator of ALX1 in the presence of EP300 (By similarity).<ref>PMID:10207073</ref> <ref>PMID:11701890</ref> <ref>PMID:15220471</ref> <ref>PMID:16287980</ref> | + | [https://www.uniprot.org/uniprot/CBP_MOUSE CBP_MOUSE] Acetylates histones, giving a specific tag for transcriptional activation. Also acetylates non-histone proteins, like NCOA3 and FOXO1. Binds specifically to phosphorylated CREB and enhances its transcriptional activity toward cAMP-responsive genes. Acts as a coactivator of ALX1 in the presence of EP300 (By similarity).<ref>PMID:10207073</ref> <ref>PMID:11701890</ref> <ref>PMID:15220471</ref> <ref>PMID:16287980</ref> |
| <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| ==See Also== | | ==See Also== |
- | *[[CREB-binding protein|CREB-binding protein]] | + | *[[CREB-binding protein 3D structures|CREB-binding protein 3D structures]] |
| == References == | | == References == |
| <references/> | | <references/> |
| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
- | [[Category: Histone acetyltransferase]] | + | [[Category: Large Structures]] |
- | [[Category: Lk3 transgenic mice]] | + | [[Category: Mus musculus]] |
- | [[Category: Mapp, A K]] | + | [[Category: Mapp AK]] |
- | [[Category: Meagher, J L]] | + | [[Category: Meagher JL]] |
- | [[Category: Stuckey, J A]] | + | [[Category: Stuckey JA]] |
- | [[Category: Wang, N]] | + | [[Category: Wang N]] |
- | [[Category: Kix domain]]
| + | |
- | [[Category: Transcriptional coactivator]]
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- | [[Category: Transferase]]
| + | |
| Structural highlights
Function
CBP_MOUSE Acetylates histones, giving a specific tag for transcriptional activation. Also acetylates non-histone proteins, like NCOA3 and FOXO1. Binds specifically to phosphorylated CREB and enhances its transcriptional activity toward cAMP-responsive genes. Acts as a coactivator of ALX1 in the presence of EP300 (By similarity).[1] [2] [3] [4]
Publication Abstract from PubMed
Like many coactivators, the GACKIX domain of the master coactivator CBP/p300 recognizes transcriptional activators of diverse sequence composition via dynamic binding surfaces. The conformational dynamics of GACKIX that underlie its function also render it especially challenging for structural characterization. We have found that the ligand discovery strategy of Tethering is an effective method for identifying small-molecule fragments that stabilize the GACKIX domain, enabling for the first time the crystallographic characterization of this important motif. The 2.0 A resolution structure of GACKIX complexed to a small molecule was further analyzed by molecular dynamics simulations, which revealed the importance of specific side-chain motions that remodel the activator binding site in order to accommodate binding partners of distinct sequence and size. More broadly, these results suggest that Tethering can be a powerful strategy for identifying small-molecule stabilizers of conformationally malleable proteins, thus facilitating their structural characterization and accelerating the discovery of small-molecule modulators.
Ordering a Dynamic Protein Via a Small-Molecule Stabilizer.,Wang N, Majmudar CY, Pomerantz WC, Gagnon JK, Sadowsky JD, Meagher JL, Johnson TK, Stuckey JA, Brooks CL 3rd, Wells JA, Mapp AK J Am Chem Soc. 2013 Feb 22. PMID:23384013[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Hung HL, Lau J, Kim AY, Weiss MJ, Blobel GA. CREB-Binding protein acetylates hematopoietic transcription factor GATA-1 at functionally important sites. Mol Cell Biol. 1999 May;19(5):3496-505. PMID:10207073
- ↑ Xu W, Chen H, Du K, Asahara H, Tini M, Emerson BM, Montminy M, Evans RM. A transcriptional switch mediated by cofactor methylation. Science. 2001 Dec 21;294(5551):2507-11. Epub 2001 Nov 8. PMID:11701890 doi:10.1126/science.1065961
- ↑ Daitoku H, Hatta M, Matsuzaki H, Aratani S, Ohshima T, Miyagishi M, Nakajima T, Fukamizu A. Silent information regulator 2 potentiates Foxo1-mediated transcription through its deacetylase activity. Proc Natl Acad Sci U S A. 2004 Jul 6;101(27):10042-7. Epub 2004 Jun 25. PMID:15220471 doi:10.1073/pnas.0400593101
- ↑ Kuo HY, Chang CC, Jeng JC, Hu HM, Lin DY, Maul GG, Kwok RP, Shih HM. SUMO modification negatively modulates the transcriptional activity of CREB-binding protein via the recruitment of Daxx. Proc Natl Acad Sci U S A. 2005 Nov 22;102(47):16973-8. Epub 2005 Nov 15. PMID:16287980 doi:10.1073/pnas.0504460102
- ↑ Wang N, Majmudar CY, Pomerantz WC, Gagnon JK, Sadowsky JD, Meagher JL, Johnson TK, Stuckey JA, Brooks CL 3rd, Wells JA, Mapp AK. Ordering a Dynamic Protein Via a Small-Molecule Stabilizer. J Am Chem Soc. 2013 Feb 22. PMID:23384013 doi:http://dx.doi.org/10.1021/ja3122334
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